Final answer:
The mass of 4.3 moles of Aluminum (Al) is calculated using its molar mass of 26.98 g/mol. The multiplication gives us a mass of 115.814 grams for the aluminum.
Step-by-step explanation:
To calculate the mass in grams of 4.3 moles of Aluminum (Al), we use the molar mass of Al, which is 26.98 g/mol. From the given information, 1 mole of Al has a mass of 26.98 grams. The mass of aluminum can be found through a simple multiplication of moles by the molar mass of aluminum:
Mass = moles × molar mass
Mass = 4.3 moles × 26.98 g/mol
Mass = 115.814 grams
Therefore, 4.3 moles of Aluminum weigh 115.814 grams. Remember always to check that the units cancel appropriately during the calculation for a correct conversion from moles to grams.